Maria Teresa’s maternal grandfather was Agustín Batista y González de Mendoza (the son of Melchor Batista y Varona and Julia González de Mendoza y Pedroso). Melchor was the son of Melchor Batista y Caballero and Irene de Varona y de la Torre. Julia was the daughter of Antonio González de Mendoza y Bonilla and María de las Mercedes Pedroso y Montalvo.